While I was researching I stumbled upon, (pun not intended) this site. It's amazing! This person has successfully debunked all of the tiny torture tanks (What I call those really small tanks that are so "perfect" for your fish) and other Betta myths.

I agree that nippyfish has solid articles and the myths that are debunked are done so in an accurate way. However, I prefer my must-reads to be information from a trusted source that is more than JUST an experienced betta keeper (such as an SPCA, a reputable magazine/book, etc.). I would, and have, given this article to new betta fish owners as a great starting point.